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  1. Bad cold start. Car re tuned and running poorly

    Tuning, Technical Questions
    So i was hoping someone would be able to help me, or give me ideas. I've been searching online for days and hours and can't find out what the problem is with my car. It's an r33 with a RB25DET Engine Mods: Microtech ecu Greddy BOV Return flow fmic Splitfire coilpacks Pod filter The car has...